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The grey parrot (Psittacus erithacus), also known as the Congo grey parrot, African grey parrot or Congo African grey parrot, is an African parrot in the family Psittacidae. The Timneh parrot ( Psittacus timneh ) was previously treated as a subspecies of the grey parrot, but has since been elevated to a full species.
At 45–51 cm (18–20 in) in length, the African grey hornbill is a large bird, although it is one of the smaller hornbills. Its plumage is grey and brown, with the head, flight feathers and long tail being of a darker shade. There is a white line down each side of the crown and another down the back which is only visible in flight.
Psittacus is a genus of African grey parrots in the subfamily Psittacinae. It contains two species: the grey parrot ( Psittacus erithacus ) and the Timneh parrot ( Psittacus timneh ). For many years, the grey parrot and Timneh parrot were classified as subspecies; the former as the nominate, the latter as P. e. timneh .
Showing dull maroon tail. Growing to 28–33 centimetres (11–13 in) in length and weighing 275–375 grams (9.7–13.2 oz), [6] the Timneh is a medium-sized parrot. Its plumage is mainly a mottled grey, with a white face mask and pale yellow eyes.
The male is territorial, and in southern Africa, a pair of African cuckoos occupy a territory of greater than 60 hectares (150 acres), driving off other cuckoos. [3] [4] Like many other cuckoos, the African cuckoo is a brood parasite, the female laying her eggs in the nests of birds of other species, removing an egg already present in the nest. [3]
Alex (May 18, 1976 – September 6, 2007) [1] was a grey parrot and the subject of a thirty-year experiment by animal psychologist Irene Pepperberg, initially at the University of Arizona and later at Harvard University and Brandeis University. When Alex was about one year old, Pepperberg bought him at a pet shop. [2]
Grey foam-nest tree frogs show remarkable adaptability in their oviposition sites, as they may lay their eggs in a variety of unique habitats. They typically choose environments hanging over bodies of water, but if this is not possible, they lay eggs on any other suitable objects.
Cosmo (born 2002/2003) is a grey parrot who by the age of six had learned more than 200 words. She resides with Betty Jean Craige, University Professor Emerita of comparative literature and Director Emerita of the Willson Center for Humanities and Arts at the University of Georgia.